Question

1) Think about the two terms below. Write an "A" next to the one that's found in animal cells. Write a "p" next to the one that's found in plant cells. Cell wall Extracellular matrix A. Think about the structures listed below. Write "CW" next to the ones that are found in cell walls. Write "ECM" next to the ones that are found in extracellular matrices. Cellulose Collagen Fibronectin Integrin Pectin B. Which of the structures from the previous question goes through a membrane? C. Think about the structure you named in the previous question. This structure is responsible for attaching

Answer 1

1). Cell wall (P) – Animal cells do not have a cell wall.

Extracellular matrix (A) and (P) – both plants and animals consist of ECM.

A). Cellulose (CW)

Collagen (ECM) Fibronectin (ECM ) Integrin (ECM) Pectin (CW)

B). Integrins are the transmembrane protein that attaches the ECM to the cytoskeleton and this permits them to pass them from ECM to cells interior or exterior cells.

C). Integrins are primarily responsible for the attachment to the ECM. They work as linker between the ECM and actin cytoskeleton and regulates the adhesive activity of the integrin.